선생님

In a sentence

• 선생님은 학생들에게 열심히 가르치세요.

  The teacher teaches students diligently.

  Here, '선생님' is used to refer to the teacher who provides instruction to students.

• 저는 선생님께 질문을 했어요.

  I asked the teacher a question.

  Here, '선생님' indicates the person being addressed as the teacher, showing respect.

• 우리 학교의 선생님들은 매우 친절하세요.

  The teachers at our school are very kind.

  Here, '선생님' refers to instructors collectively working at a school.